Get rid of all the library tags.

lib/src/scan.dart

 // Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 /// A library for broadly-useful functions and regular expressions for scanning
 /// HTTP entities.
 ///
 /// Many of the regular expressions come from [section 2.2 of the HTTP
 /// spec][spec].
 ///
 /// [spec]: http://www.w3.org/Protocols/rfc2616/rfc2616-sec2.html
-library http_parser.scan;
-
 import 'package:string_scanner/string_scanner.dart';
 
 /// An HTTP token.
 final token = new RegExp(r'[^()<>@,;:"\\/[\]?={} \t\x00-\x1F\x7F]+');
 
 /// Linear whitespace.
 final _lws = new RegExp(r"(?:\r\n)?[ \t]+");
 
 /// A quoted string.
 final _quotedString = new RegExp(r'"(?:[^"\x00-\x1F\x7F]|\\.)*"');
@@ skipping 44 matching lines @@
 /// If [name] is passed, it's used to describe the expected value if it's not
 /// found.
 String expectQuotedString(StringScanner scanner, {String name}) {
   if (name == null) name = "quoted string";
   scanner.expect(_quotedString, name: name);
   var string = scanner.lastMatch[0];
   return string
       .substring(1, string.length - 1)
       .replaceAllMapped(_quotedPair, (match) => match[1]);
 }